Pile-cutting mechanism for tuft-fabric looms.



J. T. GYR & J. K. DALKRANIAN.

PILE CUTTING MECHANISM FOR TUFT FABRIC LOOMS.

APPLICATION FILED FEB. 12, 1912.

1 137K242, Patented Oct. 28, 1913.

3 SHEETS-SHEET 1.

J. T. GYR & J. K. DALKRANIAN,

PILE CUTTING MBGHANISM FOR TUFT FABRIC LOOMS. APPLICATION FILED FEB. 12, 1912.

1,07%242, Patented 0ct.28,1913.

3 SHEETS-SHEET 2.

Wi kmmm v 6. lew- M MW 2% 8 Patented Oct. 28, 1913.

I s SHEETS-SHEET 3.

APPLICATION FILED FEB. 12, 1912.

' combined with a filling needle me the UNITED STATES PAT .msnrn 'r. CYR, on wononsrnn, MAsseoHusEm's, AND JAMES K. DALKRANIAN, or

c on.

WEEHAWKEN: HEIGHTS, NEW JEBSEE; SAID DALKRANIAN ASSIGNOR' TO. UNITED STATES CARPEW GOMPANY, A CORPORATION OF NEW YORK, AND SAID CYR ASSIGNQR TO; CBOM-BTON $6 KNOWLES 1100M WORKS, A CORPORATION OF MASSACHUSETTS.

PILE -CUTTING MECHANISM FOR TUFT-FABRIC LOO-MS.

Specification of Letter Patent.

Patented Oct. 28,1913.

Application filed February 12, 1812. Serial No. 677,270.

To all whom zimay concern.

Be it known that we, Josnrrr '1. On and JAMES K. DALKRANIAN, citizens of the United States, residing, respectively, at Worcester, in the county of Worcester and State of Massachusetts, and Weehaw n Heights, in the county of Hudson and State of; New Jersey, have jointly invented certain new and useful Improvements in Pile- Cutting Mechanism for Taft-Fabric Looms, of which the following is a specification.

Our invention relates to looms for weaving tufted fabrics, and more articularly to looms of the type shown an described in U. S. Letters Patents, No. 446,402, and No. 858,963, in which a. series of vertically moving needles are employed which carry the tuftyarn to form the pile on the fabric.

Our invention particularly relates to; the

ile cutting mechanism in connection with he filling needle mechanism.

The ob eot of our invention isto improve upon the pile cutting mechanism referably dhanism.

Our invention consists in certain novel features of construction of our improvements as will be hereinafter fully described.

In our improvements, we have an actuating carriage mounted to have a reciprocating motion on a guide at one side of the loom, and we have a cutter, cutter, mounted to have a reciprocatin m0- tion on a guide extending transverse y of fabric, and preferably under the fabric. We have connections diate said actuating carriage and the cutter, and means to automatically connect the cutter with and disengage it from said carriage to cause it to operate to cut the pile yarns as the cutter is drawn trans versely across the fabric, and. to cause the cutter to remain inoperative at one edge ofthe fabric. We also have a filling. needle to insert a fil'lin into the shed at predetermined times,'an automatic means forcone necting the needle 'withand disconnecting it from said actuating carriage.

We have shown in thedrawings a dea, same preferably arotary intermei shaft.

ta ched portion of a loom of the type referred to, with our improvements combined therewith, sufficient to enable those skilled in the art to understand the construction and operation thereof.

Referring to the drawings :Figure 1 is a plan view of our improvements detached, in this instance located on the right hand side of the loom. Fig. 2 is a side or end view of the parts shown in Fig. 1, and also a' section, on line 2, 2, Fig. 1, looking in the direction of-arrow a, same fi re; the breast beam and take-up roll, not s own in Fig. 1, are shown in'thi's figure. Fig. 3 shows, on an enlarged scale, a. section on line 3, 3, Fig. 1, lo'okin in the direction of arrow a, same figure. Fig. 4: is a plan view of some of the parts shown in Fig. 3, looking in the direction of arrow 1), same figure, and, Fig.

5 shows, on an enlarged scale, the cutter mechanism detached, and shown at the left in Fig. 1, looking 1n the direction of arrow figure.

In the accompanying drawings, 1, see Fig,

' 1, is the right hand loom side, or end frame, and 2 see Fig, 2, is the left hand loom side or end frame.

3 is the breast beam, over which the tufted :fabric 4 passes to the take-up roll 5. The tufts on the fabric 4 are formed by carryin downwardly the pile yarn 4 in the tu t ineedle 6, (only one is showriz, see Fig. 2, to be cut by the cutter mec anism, to be hereinafter described.

7 is a rotary shaft, and 8 the bottom The weft or filling needle 9, see Fi 1,

which carries a filling 10 into the she in the usual way, is secured at its outer end to 5 a slide 11- having a notched.- projecting arm I 11-. see Fi 3. A reciprocating moti n is communica d to the slide 11, and. needle 9 on the =Wardly, Iwardiy extending lever arm 13 enga es the id'e bar 12, which extends outi m the loom frame, when a down,-

notchedprojecting arm 11' on the s ide 11.

I The lever 13 has its hub 13, see Fi l, pivotaliy mounted on a Stud 14, see

lg: on

see Fig. 1.

A. helically coiled expansion spring 17, see Fig. 3, is adapted to engage an extension 13 on the lever 13, and acts to move 1nwardly the lever 1.3, to engage the projecting arm 11 on the slide 11. An extension 13 on the lever 13 is adapted to be engaged by an arm 18, see Fig. 3, which has its hub 18, see Fig. 1, secured on the shaft 19. The upward motion of the arm 18 and the engagement of said arm with the extension 13" on the lever 13, causes the downwardly extending lever 13 to be disengaged from the notched projecting arm 11' on the slide 11, see broken lines Fig. 3. The actuating carriage 15 may then be moved without moving the slide 11 and the filling needle 9, leaving said needle in its inner or outward position. The rocking of the shaft 1.9 is caused by a cam 20, see Fig. 1, which is fast in this instance on the bottom shaft 8, and has a cam groove therein to receive a roll 21 on a cam lever 21, which hasits hub 21" pivotally mounted on a stud 22 on the loom side, see Fig. 1. A connector 23 has its lower end pivotally connected to the end of an arm 21" on the cam lever 21, see Fig. 1. The upper end of the connector 23 is pivotally connected to the end of an arm 24. The arm 24 has its hub 24', secured by aset screw 24" on the shaft 19, to which a rocking motion is communicated, through which rocking motion, the connection and disconnection of the filling needle slide 11 and filling needle 9, withthe actuating'carriage 15, is effected.

The bottom shaft 8 has in-this instance secured thereon a cam 25,- see Figs. 1 and 2, on the periphery of which, in this instance, travels a roll 26 on one arm of an angle lever 26. The lever 26 has its hub pivotally mounted on a stud 27 on a bracket 28, secured to the loom side 1. The other arm of the angle lever 26 is provided with an adjustable screw 30, which is adapted to engage the beveled face 31, see Fig. 1, on the end of a horizontally extending lever 31, which has its centrally located hub 31" pivotally mounted on a stud 32 on the stand 28. "When the angle lever 26 is operated by the cam 25, it causes the lever 31 on the stud 32 to be rocked. Extending out from the hub 31" is a second arm 31, extending rearwardly, and provided with a set screw 33, see Fig. 1, which is adapted to engage the hub 34 of a cord pulley 34. The cord pulley 34 is loosely mounted on the constantly rotating shaft 7, which shaft has in this instance secured thereon the disk 35,

see Figs. 1 and 2. The disk 35 has the engaging surface 35, preferably of leather, which, on the moving of the pulley 34 through the set screw 33, is engaged by said pulley 34, and causes the revolution of said pulley. The revolving of the pulley 34 causes the movement of the cord 36, which passes around' the pulley 34, and over sheaves 37 and 38 on the stand 28, see Figs. 1 and 2.

To tighten the cord 36 and secure its engagement with the pulley 34, a horizontally extending lever 39 is in this instance provided, which has its hub 39' pivotally mounted on a stud 40, see Fig. 2. One arm of the lever 39 is provided with a set screw 41, which engages at its lower end the beveled end 26 on one arm of the angle lever 26, see Fig. 2, which causes the rocking of the lever 39 and the downward movement of a roll 42, mounted on the other end of the lever 39, to cause said roll 42 to engage the cord 36. The cord 36 passes over two guide pulleys 43 and 44, which are mounted on a stand 45 secured to the bar or cross girt 46, see Fig. 2. The opposite end of the cross girt 46 has pivotally mounted, on the bolt 47 the end sheave 48, around which the cord 36 passes.

The cord 36 is adapted to rotate the pile cutter 49, which is in this instance of circular shape, and is secured to the upper end of a shaft by a screw 49, see Fig. 1, which shaft in this instance is loosely mounted in a stand 50. The lower end of the cutter shaft has secured thereon the cord sheave 51, around which, by means of two guide sheaves 52 and 53, the cord 36 passes. The cutting periphery of the cutter 49 enters in this instance a slot or recess in a guide piece 54, which acts to positively move the tuft yarn 4 toward the cutting surface of the cutter 49.

The stand of the cutter 49 is rigidly connected to a slide 55, see Fig. 2, which has a reciprocating motion on the bar or guide 46, which extends transversely of the fabric and under the warps, and is in this instance attached at one end to the upper end of a stand 46 secured to the loom side, see Fig. 2. The slide 55 has in this instance one end of a rod '56 secured thereto, see Fig. 1. The other end of the rod 56 is secured to a stand 57, which is secured to a slide 58, see Fig. 3, which has a reciprocating motion on the guide bar 12, which extends outwardly from the loom side. The slide 58, has a notched end 58', see Fig. 3, to be engaged by and disengaged from the lower end of the lever 59, which has its hub 59' pivotally mounted on a stud 60 on a bracket 15 on the actuating carriage 15. An extension 59" on the lever' 59 is yieldingly moved upwardly by a helically coiled expansion spring 61, see Fig. 3. A lever 62, which has 'engage the lever 59 from the notched arm 58 on the slide 58, see broken lines Fig. 3,

at one end of the travel of the slide 58.

A lever 63, partially shown in Fig. 1, has

its hub 63' fast on the rock shaft 19 and is similar to the lever 62, and acts to disengage v the slide 58 at the other end of its travel. The cutter 49 as above stated is connected through rod 56 with the slide 58.

The operation of our improvements is briefly as follows: In the normal operation of the loom, a rotary motion is communicated to the cutter 49, through the cam 25 on the bottom shaft 8, and intermediate connections to the friction disk 35. The rotary motion of the cutter 49 is independent of the reciprocating movement of said outter with the actuating carriage 15. The cutter 49 is preferably caused to rotate only when the cutter is engaging the tuft yarns to cut the same. In the operation of the loom, when the tuft needles 6 with the pile yarn therein are above the warps, the carriage 15 and slide 11 are operated to carry the filling needle 9 and the filling 10 into the shed, in this instance from the right edge of the fabric to the left edge of the fabric, and then the carriage 15 and slide 11 are operated in the opposite direction, to carry the filling needle 9 and filling 10 through the shed from the left edge of the fabric to the right edge of the fabric, for the first pick, and during this first pick, the cutter is inoperative and remains at the right edge of the fabric in facing the loom. The shed is now changed, and the actuating carriage 15 and needle slide 11, carrying the needle 9 with the filling 10, is again operated to carry the filling 10 into the shed from the right edge of the fabric to the left edge of the fabric, and simultaneously the cutter mechanism is connected with the actuating carriage 15 by the rocking of the shaft 19, moving the arm 62 upwardly, and the lever 59 engaging the extension 58' on the slide 58, to cause the cutter 49 to be carried below the fabric without operating the cutter, from the right edge of the fabric to the left edge of the fabric, at the same time that the needle 9 is inserted. The cutter 49 is then disconnected from the actuating carriage 15, through the rocking of the shaft 19 moving the arm 63 downwardly, and remains on the left of the fabric, and the actuatin carriage 15 and slide 11, and needle 9, return through the shed to their position on the right edge of the fabric. having put a second .pick in the fabric. The yarn needles 6, carrying the pile yarn 4, are now carried down between the warp threads, and properly wrapped around the warp threads, after the tuft 65 yarn is drawn out from the tuft needles 6,

and 'held'in their lowered position, as shown in Fig. 2. The actuating carriage 15 is then operated, the slide 11 and needle 9 being disconnectedtherefrom, and left in a position at the right of the fabric by the rocking of the shaft 19 disengaging the arm 13, shown by broken lines in Fig. 3, from the notch 11' on the slide 11, and the cutter mechanism is connected to the actuating carriage 15, through the rocking ofthe shaft 19 and the movement'of the arm '63 thereon, said carriage being moved along the guide plate 12 to its inner position. The actuating carriage 15 is now moved to itsouter position, and the cutter mechanism, connected therewith, is drawn below the fabric, as shown in Fig. "2, from the left edge of the fabric to the right edge of the fabric. by the movement of said actuating carriage 15, to cut the tuft yarns, extending from the lower ends of the tubes, by the rotary cutter 49. During the cutting of the tuft yarns and the movement of the cutter from the left edge of the fabric to the right edge of the fabric, the slide 11 and needle 9 remain on the right edge of the fabric. To sum up briefly, the first pick is put into the shed by the needle, carrying the filling, traveling from the right edge of the fabric to the left edge, and re: turning from the left edge to the right edge,

the cutter remaining stationary on the right edge of the fabric. The shed is then changed, and the needle carrying the filling is again inserted into the shed from the right edge to the-left, and the cutter mechanism travels with the needle from the right edge to the left, and is then left on the left edge of the fabric, and the needle withdrawn from the fabric, from the left edge to the right edge; completing the putting in of the second pick. The needle and filling remain on the right edge of the fabric, and the actuating carriage moves to the left, and the cutter mechanism is connected therew1th,.

and then drawn under the fabric for the cutting operation, from the left edge of the fabric to the right edge, and then left on the right edge of the fabric, the shed changed, and the needle and filling again inserted and withdrawn, as described above.

In our improved construction of the pile cutting mechanism, a rotary motion is communicated to the cutter 49 independently of its .reci rocating movement through the shed. l he cutter disk, at predetermined times, is connected with and operated by the reciprocating actuating carriage 15, to be carried .below vthe fabric to cut the tuft yarn, and returned to its inoperative position, and disconnected from the actuating carriage 15 to remain at rest until it is again connected to said carriage to be carried below the shed to cutrthe tuft yarns, all as will be readily understood by those skilled in the art.

It will be understood that the details of construction of our improvements may be varied if desired.

We have shown in the drawings and de-.

- yarns.

Our improvements are not limited to the particular class of looms above referred to, as they may be used in connection with any loom in which the ends of the tuft yarns are inserted into the shed, and woven into the fabric, and are then cut off to form the pile.

Having thus described our invention, what We claim as new and desire to secure by Letters Patent is:

1. In a loom for Weaving tufted fabrics, an actuating carriage, mounted to have a reciprocating motion on a guide, a cutter mounted to have a reciprocating motion under the warps on a guide extending transversely of the fabric, connections intermediate said carriage and said cutter, and means to connect the cutter with, and disconnect it from said carriage, to cause it to operate to out the pile yarns, and to remain inopera tive, at predetermined times.

2. In a loom for weaving tufted fabrics, an actuating carriage, mounted to have a reciprocating motion on a guide, and said guide, a rotary cutter mounted to have a reciprocating motion on a guide, and said guide extending transversely of the' fabric, and

means to rotate said cutter, connections intermediate said carriage and said cutter, and means to connect said cutter with, and disconnexzt it from said carriage, to cause it to operate to out the pile yarns, and to remain inoperative, at predetermined times.

3. In a loom for weaving tufted fabrics, an actuating carriage, mounted to have a reciprocating motion on a guide, and said guide, a rotary cutter mounted to have a reciprocating motion on a guide, and said guide extending transversely of the fabric, constantly rotating means for rotating said cutter, automatic means to cause said rotating means to rotate the cutter at predetermined times, connections intermedlate said carriage and said cutter, means to connect said cutter with, and disconnect it from said carriage, to cause it to operate'to cut the pile yarns, and to remain inoperative, at predetermined times.

4. In a loom for weaving tufted fabrics, an actuating needle carriage, mounted to have a reciprocating motion on a guide, and said guide, a needle to insert the filling into the shed, automatic means for connecting the needle with and disconnecting it from said carriage, a cutter, mounted to have a reciprocating motion on a guide, and said guide extending transversely of the fabric, automatic means for connecting the cutter with, and disconnecting it from said carriage, to cause it to operate to cut the pile yarns, and to remain inoperative, at predetermined times.

5. In a loom for weaving tufted fabrics, an actuating needle carriage, mounted to have a reciprocating motion on a guide,.and said guide, a needle to insert the filling into the shed, automatic means for connecting the needle with, and disconnecting it from the needle carriage, a rotary cutter mounted to have a" reciprocating motion on a guide, and said guide extending transversely of the fabric, automatic means for connecting said cutter with, and disconnecting it from said needle carriage, to cause it to operate to cut the pile yarns, and to remain inoperative, at predetermined times.

6. In a loom for Weaving tufted fabrics,

an actuating needle carriage, mounted to have a reciprocating motion on a guide, and said guide, a needle to insert the filling into the shed, and automatic means for connecting the needle with, and disconnecting it from said needle carriage, at predetermined times, a rotary cutter mounted to have a reciprocating motion on a guide, and said guide extending transversely of the fabric, constantly rotating means for rotating said cutter, automatic means to cause said rotary means to rotate the cutter at predetermined times, automatic means for connecting the cutter with,-and disconnecting it from said needle carriage, to cause it to operate to cut the pile yarns, and to remain inoperative, at predetermined times.

7. In a loom for weaving tufted fabrics, a rotary cutter, a guide to guide the tuft yarn toward the cutter, a cord to operate said outter, a driving sheave around which said cord passes, a constant driven friction member, and means to cause the frictional engagement of the driving sheave with the friction member.

J OS. T. CYR. JAMES K. DALKRANIAN. Witnesses:

J. B. SYME, -M. Haas. 

